Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
56158 (1999 CG138)
Classification: Main-belt Asteroid          SPK-ID: 2056158
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2071656140000976 5.047e-08  
a 2.56673894428873 1.6579e-08 au
q 2.034998894917193 1.2684e-07 au
i 2.934288646749227 5.7404e-06 deg
node 320.6785616333478 9.1813e-05 deg
peri 301.5851339311653 9.3191e-05 deg
M 251.5868360305969 2.2201e-05 deg
tp 2459052.824899543690
(2020-Jul-22.32489954)
9.5706e-05 TDB
period 1502.003611680265
4.11
1.4552e-05
3.984e-08
d
yr
n .2396798497689857 2.3222e-09 deg/d
Q 3.098478993660267 2.0013e-08 au
  Orbit Determination Parameters
   # obs. used (total)      646  
   data-arc span      7302 days (19.99 yr)  
   first obs. used      1999-02-11  
   last obs. used      2019-02-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58375  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 03:23:33  

Additional Information
 Earth MOID = 1.02095 au 
 Jupiter MOID = 1.99364 au 
 T_jup = 3.400 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.5   n/a MPO432117  

56158 (1999 CG138)          Discovered 1999-Feb-11 by Spacewatch at Kitt Peak
Reference: 20030318/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 CG138 = 2000 QH77 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-20 15:54 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin